65. Causes of developmental anomalies (formal and causal genesis)

Question 1

Congenital anomaly is also known as

Answer 1

Birth defect

Question 2

Causes of maldevelopments

Answer 2

Genetic origin
Non genetic origin
- Prenatal viral, bacterial, parasitic infections
- Intrauterine exposure to poisons

Question 3

Example of multifactorial inheritance disorders

Answer 3

Polydactyly (Simmental cattle)
Porcine encephalocele
Cyclic hematopoiesis in grey collies

Question 4

Exogenous causes of developmental anomalies

Answer 4

mechanical
physical
Toxic effects (vit A &D overdose, drugs, alcohol

Question 5

Parvo virus induces which abnormalities in kittens?

Answer 5

Kittens cerebellar hypoplasia

Question 6

Influenza virus induces which abnormalities in chickens

Answer 6

Chicken microencephaly

Question 7

Agenesia

Answer 7

Failure of all part of an organ to develop during embryonic growth

Question 8

Hypoplasia

Answer 8

underdevelopment or incomplete development of a tissue or organ

Question 9

Oligo -

Answer 9

• Deficiency of different organs

Question 10

Schisis

Answer 10

splitting of the different organs, or tissues,

Question 11

Atresia

Answer 11

condition in which a body orifice or passage in the body is abnormally closed or absent

Question 12

Stenosis

Answer 12

abnormal narrowing in tubular organ or structure

Question 13

Nanosomia

Answer 13

term being used to describe a person of short stature

Question 14

Duplicitas, multiplicitas
eg. (poly-)

Answer 14

Polydactyly or polydactylism also known as hyperdactyly, is a congenital physical anomaly (having supernumerary fingers or toes

Question 15

Hypersomia

Answer 15

abnormally large size